Method of mounting collar can collars



J. COYLE ET AL METHOD OF MOUNTING COLLAR CAN COLLARS April 26, 1949.

Original Filed Dec.

INVENTOR. John Cogle d W illiakm F Punle Patented Apr. 26, 1949 T Fri METHOD OF MOUNTING COLLAR CAN CQLLARS John Coyle and William F. Punte, Baltimore, Md, assignors to Continental Can Company, inc, New York, N. K, a corporation of New York Original application December 30, 1944, Serial No. 570,655. Divided and this application January 20, 1947, Serial No. 723,191

2 Claims.

The invention relates generally to metallic receptacles, and more particularly to the type known as collar cans wherein are provided tear strip structures adapted to be wound on keys and by this means torn out of the body walls of the cans in order to effect an opening thereof, and it primarily seeks to provide a novel method of mounting collar can collars of the type shown in our copending application for U. S. Letters Patent Serial Number 570,655 filed December 30, 194 of which this application constitutes a division.

In cans of the type stated the tear strips usually are defined by parallel score lines which surround the cans adjacent the upper end closures thereof, and a collar is snugly fitted within the upper end of each can in position for extending upwardly from the upper extremity of the can body resulting from the tearing out of the rip strip, thereby to maintain the desired can body wall height and provide a support neck over which the skirt or body wall portion remaining attached to the upper end closure can be telescoped to effect a reclosure of the cans. It is the purpose of the present invention to provide a novel method of mounting collars of the type hereinabove referred to, said collars including an annularly pleated portion, and said method consisting in inserting the collar into the upper end of the can body having a preformed, outwardly projecting bead and then forcing on of the pleats outwardly to cause a portion thereof to project into and conform generally to the shape of said bead in order to efiect a collar anchoring engagement in the can body.

With the above and other objects in view that will hereinafter appear, the nature of the invention will be more fully understood by following the detailed description, the appended claims and the several views illustrated in the accompanying drawings.

In the drawings: 1

Figure 1 is a part side elevation and part vertical cross sectional view of a can body embodying the invention.

Figure 2 is an enlarged fragmentary sectional view illustrating the collar inserted in the can body preparatory to the forcing of the collar pleat into the body bead. v

Figure 3 is a, view similar to Figure 2 illustrating the step of forcing the collar pleat into and conforming it to the shape of the body bead for securely anchoring the collar in the can body.

Figure 4 is an enlarged fragmentary sectional View lllustarting the collar per se.

. in the conventional manner to provide a tear strip 9 adapted to be wound about a key and torn from the wall of the can body in the manner well known in the art for effecting an opening of the can.

According to the invention a collar including a main body portion H3 is snugly fitted within the upper end of the can body, and when the collar is properly mounted in the can body, the main body portion thereof extends above and below the tear strip 9 in the manner clearly illustrated in Figure 3. At its upper extremity th collar body is equipped with an inwardly curled bead H, and at its lower extremity the collar is provided with an annularly pleated wall portion generally designated 12. The collar wall pleating is formed to comprise two ,upper and lower inwardly directed flange portions 33, and these flange portions 43 join with two outwardly directed annular flange portions id joined at their outer ends to provide a nose or rib 15. It will be observed by reference to Figures 2 and 4 that the flange portions M are wider than the upper and lower flange portions l3, and that the outwardly directed nose or rib l5 normally is disposed within the outside diameter of the collar so as to permit insertion of the collar intothe can body in the manner illustrated in Figure 2.

In effecting the secure mounting of the collar in the can body, the collar is first inserted in the can body with its central pleat or outwardly directed nose portion 55 centered opposite the outwardly directed can bead l and with its lower edge extremity resting upon the inwardly directed can body bead 8 as at l6. While it is preferred that the inwardly directed body bead 8 be provided for the purpose stated, it will be obvious that this bead can be dispensed with if desired if other means be employed for properly placing the collar pleat or nose I5 with relation to the can body bead 1. With the collar and can body assembled in the manner stated, inner and outer rollers I1 and I8 are placed in opposition at opposite sides of the collar and the can body bead as shown in Figure 2, the outer roller having a peripheral groove l9 therein conforming to the external shape of the body bead I, and the roller l1 having converging edge face portions 20 merging into a rounded edge portion 2|, and the centers of said roller groove and rounded edge portion lying in the same plane in which the center of the can body bead 1 and the collar pleat nose i lie.

By now forcing the rollers I1 and 18 together to tightly press the can body and collar portions between them and bringing about relative rotation between the rollers and said can body and collar portions, the collar flanges or pleat portions l4 will be partially collapsed and the nose l5 will be forced outwardly beyond the outside diameter of the collar into anchoring engagement in the can body head I. It will be apparent by reference to Figure 3 that the rounded roller edge 2| is so shaped that it will round out the pleat nose I5 and cause it to conform at 22 to the internal curvature of the body bead I, the final spread of the collar flange portions I4 being determined by the edge face portions 20 of the anchoring and shaping roller 11. By thus reshaping the collar pleat at 22 the collar is securely anchored in the can body against displacement downwardly or upwardly with relation to the can body By forming and mounting the collar in the, manner hereinbefore described, said collar will not only be securely anchored in the can body, but it-will be so mounted as to present no raw metal edge portions in position for being contacted by the hand of a user of the can.

It is to be understood that the collar herein disclosed may comprise van endless band such as would be formed from a drawn ring, or it may be shaped from a strip joined at its ends in an approved manner. An example of the last mentioned type of collar is shown in the copending application for U. S. Letters Patent, Serial Number 542,961, filed by John Coyle and William F. Punte, on June 30, 1944, now Patent No. 2,433,031, granted December 23, 1947. When collars formed from end joined strips are employed, the joint or seam disclosed by said Coyle and Punte will be found desirable because in this form of joint or seam the multiple thicknesses of collar band metal are disposed only at the central cylindriform body portion of the collar and no overlapping of wall thicknesses is presented at the upper edge curl or the lower edge bent portions of the collar,

While it is preferred that the method be practiced in connection with a can body having a preformed, outwardly directed bead I therein as illustrated in Figure 2, it is to be understood that by inserting a collar formed as in Figure 2 in a can body not equipped with a preformed annular bead, and by engaging the collar and can body in rolling contact between rollers in the manner illustrated in Figures 2 and 3, an outwardly directed annular head will be thus formed in the can body and the outwardly directed nose of the pleated portion of thecollar will be pressed into the bead and reshaped therein to conform in shape to said bead so as to secure the collar against endwis movement'in the can body. The invention comprehends this method modification, and when the method is thus performed the pleated portion of the collar including the outwardly directed nose formed by outwardly converging flange portions greatly facilitates the formation of the bead and the simultaneous reshaping and anchoring of the collar nose portion therein. I

While specific method steps have been shown and described herein asexamples of the invention, it is to be understood that various changes in said steps may be made without departing from the spirit and scope of the invention as defined in the appended claims.

We claimr 1. In a method of mounting a collar in a collar can body having an outwardly extended annular bead therein, said collar including a body and an annularly pleated portion having an outwardly directed nose initially disposed within the circum ferential limits of the collar body and formed by inwardly diverging flange portions merging at their inner termini into outwardly directed flange portions which .are narrower than said diverging flange portions, the steps of inserting the collar in the can body with said nose opposite said bead, and pressing the nose into and conforming the same in shape to said bead by pressure applied centrally to the interior of the nose and spreading toward said flange merger thereby to secure the collar against endwise movement in said body.

2. In a method of mounting a collar in a collar can body having an outwardly extended annular bead therein, said collar including a body and an annularly pleated portion having an outwardly 4 directed nose initially disposed within the circumferential limit of the collar body and formed by inwardly diverging flange portions merging at their inner termini into outwardly directed flange portions which are narrower than said diverging flange portions, the steps of inserting the collar in the can body with said nose opposite said head,

and engaging thenose and bead in rolling contact between rollers for pressing the nose into the REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,839,435 Widell Jan. 5, 1932 2,333,841 Bugge Nov. 9, 1943 2,391,772

Coyle et al. Dec. 25, 1945 

